it will be interesting to see if the HD4870X2 is anything more than an on board 4870CF. because if it is a standard on board CF then the GTX 280 will still be the top card to get.

to the guys upgrade form 8800gtx cards. your not going to see much of an increase going to HD4870. yes there will be some but 30% is not that noticeable (all depends on game). you would notice a large increase going to a GTX 280 however. to bad it costs more than most people want to spend.